Compressor for refrigerating systems.



c. M. HoLLEY.

COMPR'ESSOR FOR REFRIGERATING SYSTEMS. vAPPucAT'NJN FAILED 1uNE2. 1916;

' UNITED sTATEs PATENT FFICE.

CLARENCE M. HOLLEY, or DETROITMICHIGAN, issIGfNoBJ To UTILITY COMrREssOR. COMPANY, OF DETROIT, MICHIGAN, A CORPORATION or MICHIGAN.

'COMPRESSOR ORTREFRIGERATING SYSTEMS.

Speccationrof Letters Patent.

rammedv Jamie' 1919. i

. v l f Application iled .Tune 2, 1916. 'Seria1 No. 101,302.

To all whom t may concern.' y

f Be it known that l, CLARENCE M. HOLLEY,

a citizen of the United States, residing at Detroit, county of Vayne, State of Michigan, have invented a cert-ain new and useful Improvement in Compressors for Re'- 'company-ing drawings, which form a part of' frigerati'ng Systems, and declare the following to be a full, clear, and exact description Of the same, such as will enable Others skilled in the art' to which it pertains to make and vuse the same, reference being had to the acthis specification.

This invention relates to compressors and its partlcular ob]ect is a compressor for use in circulatingan anhydrousfgas or the .like

through the expansion Coils and return line in a refrigerating system. Another object of the 'invention is a Compressor for re# ceivlng and discharging the c'z1rc1'1lat1nggg,`

medium, the pump having a receiving and' discharging chamber. forming a part of thecirculation system. Another object of the invention is a compressor forming a part of a circulation system of refrigerating apparatus as stated, adapted to receive the supply inria yreceiving chamber connected with the low pressure side of the `system and to discharge the same to the expansion coils under uniforml pressure and flow without pulsation. These objects and the several novel features of the invention are hereinafter more fully described and claimed and shown in the accompanying draw1ng-1n which- The figure is a sectional view of a "com.

pressor embodying my invention'showing the receiving and discharge chamber and their connection with the low and' high pressure side of the circulation system. The pump is preferablyof that type in which a series of cylinders are arranged in' a circle having pistonsoperating in succession therem, the arrangement loelng` such that as one piston approaches the limit of,

sists of a circular block or casting` 1 hav-V 'ing a series of cylinders 2 arranged m a circle about a central intake chamber 3.

went' leakage of gas from 'the chamber and,

This chamber has a slot 4- in the wallv thereof leading into and common to all of the cylinders 2 and providing a port for each cylinder that scontrolled by the piston 5 operating therein. The pistons are each connected by a connecting rod 6 and ball` and socket joints at each end as shown with a wabble plate 7 supported by a universal joint connectioncentrallyv on the end of, the cylinder block l. The wabble. plate .has a stud 8 thereon connected with a crank 9 on the operating shaft 10 and 'the wabble plate and `crank are inclosed `in the chamber 11 formed by the casting 12 secured to the cylinder casting 1 in almann'er to form an air tight connection therewith. The shaft- 10 extends through `a bearing in the endof the casting 12 and is provided with a usual packing.gland'13of such form as to prelikewise'y prevent air from passing along the surface of the shaft into the chamber 11. This shaft. 10 may be rotated in any approved lmanner as by a gear Wheel or belt1 not here shown,l or other approved means.:

To the opposite fend of the cylindel` isA secured'arecessed casting forming a discharge chamber as hereinafter stated and between this casting 14 and the end of the cylinder 'casting is secured the apertured plate 15 having apertures ltindividual to each cylinder 2. The,casting 14 and plate 15 are secured to the ycylinder casting in a manner to prevent leakage of air thereinto or of gas therebetween.

nally. movable valves"'18 mounted ,in aperf/ tures therein and each being held imposition byl a. spring 19. These valves lare each provided with ausharpcircu'lar, edge 2O seat- "1 ing against the face of the plate 15, whichn isof a material somewhat softer than4 the'A A valve which mayl thus efectually seat itself y V and prevent the movement .of fluid from the l' cylinder? till sufficient pressure has been produced therein to lift the valve@ On the back of the valve v plate'lS is a retainer plate 21 preferably o spring' .material having a series of arms, .one for each valve tending, 105 1n conjunction .with-the springr1-9, to 'hold f the valve on its seat. ,Y

The valve plate has a circular groove out' in the face thereof adjacent the plate 15 and common to the entire series' of valves, and 110` i l 90 Tothis plate 15 is preferably secured the f 'valve plate 17 having a series of longitudithis channel or groove is open to the interior of the discharge chamber, formed by the casting 14, through channels 22, several of which are formed about the periphery ofthe valve plate. On the compression stroke of any piston the fluid compressed is delivered into the channel or groove and into the displate, and retainer are not material to thisinvention, but the described parts may be formed in any approved manner and secured in position as may be desired to perform the described functions.

To the discharge chamber is connected a pipe forming part of the high pressure system which pipe, as will be, readily understood connects with the cooling and eXpan-' sion coils. To the other end of the coils is connected a pipe, the end 26 of fwhich is connected with the receiving chamber l1 of the pump, which chamber is `in communication with the intake chamber 3 by a passageway 27 ,several of which may be'provided in the cylinder casting.

An anhydrous gas, asammonia gas or other well known fluid for the purpose stated, may be circulated by this pump and by reason of the detrimental effect produced by leakage of the gas, the pump is devised to provide a closed, air tight, circulating system as 'heretofore stated, so that the poison-V ous or other gases suitable for use in a system of the character stated may be circulated. y

In operation vthe pistons on .the intake stroke open the port individual thereto formed by the slot 4 in the wall of the intake chamber. By reason ofthe partial vacuum producedon the intake stroke, iuid from the intake chamber will flow into the cylinder having the open port and on the succeeding down stroke ofthe piston, the valve 18 will liftv when the pressure in the cylinder is suflicient to overcome the tensionof the spring .19 and i spring retaining plate 21.

, The fluid-is'thus discharged under a predetermined pressure which may be varied by' y varying the pressure in the discharge system, asis well knowny and as a succeeding I am aware of other compressors in which l cylinders are arranged circularly and p rovided With pistons operating in successionA about the circle, butin such devices no provision is made to form a closed circulating system andan essential characteristic of this inventionl resides in the arrangement of the receiving or intake chamber communicating with the" cylinders and common to all thek cylinders which discharge into a common discharge chamber connected With the high pressure Vside of the circulating system.

Having thus briefly/described my invention its utility and mode of operation, what Iclaim and desire to secure by Letters Patent of the United States is- 1. A compressor havinginclosed intake and delivery chambers at opposite ends provided with inlet and outlet conduits respectively, the compressor `comprising a series of cylinders arranged in a circle, each opening into the discharge chamber' and having an intake port formed in the Walls thereoi` intermediate its length, a chamber into which all the said intake ports open, and a conduit between said chamber and the said intake.

2. A compressor comprising a casing having a-receiving chamber at one end and a discharge chamber at the opposite end, a series of compressor members having `cylinders arranged in a circle, pistons operating therein, a single valveless conduit leading from the intake chamber and opening into each oiy said cylinders providing intake ports therefor, and a valve controlled discharge port for each cylinder.

3. A compressor erating systems comprising a casing having a receiving chamber and aidischarge charnber each provided with an intake and disfor closed circuit refrig- Y charge conduit, a series of compressor members havinga plurality of cylinders, pistons therefor operating 1n succession therein, a

single valveless conduitleading from the in take chamber to each of the cylinders pro-'- viding intake ports therefor controlled by the pistons, and a valve controlled discharge port for each of the cylinders opening into the said discharge chamber. Y u

In testimony whereof Iw sign this specifica tion. I

. fv CLARENCEAM. HOLLEY. 

